Fiberglass Tanks Calculators Fiberglass Tanks Calculators Bulk Chemical Tank Capacity Calculators Precision Tank Custom Precision Tank Tank Diameter (Inches) Select Tank Diameter 58" 70" 72" 82" 94" 96" 132" (11') 139" (11'7") 142" (11'10") 144" (12') Tank Bottom Choose a Tank Diameter First Flat Bottom Cone Bottom Flat Bottom Cone Bottom Flat Bottom Fluid Depth (Inches) Calculate Reset Results Tank Capacity (in gallons) Filled With (in gallons) Custom Tank Type Flat Bottom Top Diameter (Inches) Bottom Diameter (Inches) Cone Height (Inches) Tank Diameter (Inches) Tank Height (Inches) Fluid Depth (Inches) Calculate Reset Results Tank Capacity (in gallons) Filled With (in gallons) Percent Full We understand that it might be a challenge to estimate how many gallons are in a container. That’s why we’ve created an easy to use calculator to help you get a better idea on how much liquid is in your tank. Our calculators can be used to estimate how many gallons are in your Precision Tank storage container and we’ve also created a calculator where you can estimate the amount of liquid for any flat bottom tank. But first, let’s go over the basic dimensions and numbers needed to calculate the amount of liquid in your tank. Tank Volume FormulaThe total volume of a cylindrical tank is calculated by using the formula Volume = π x Radius2 x Length where Radius = Diameter/2 By entering the Fluid Depth (in inches), represented by the letter "F" in the illustration above, we can calculate an estimated amount of liquid. Precision Tank TypesPrecision Tank cylindrical storage tanks can be manufactured with a flat bottom or a cone bottom in a variety of different sizes. To estimate how much liquid is in your Precision Tank tank, simply select your tank’s diameter size from the dropdown list above and then tell us if your tank is a flat bottom or a cone bottom. These volumetric tank calculators are supplied to you for informational purposes only. These capacity calculators are based on theoretical volumes not actual volumes, and do not reflect atmospheric conditions or thermal expansion/contraction due to temperature changes. If internal accessories such as pumps are present, displacement of these accessories must be considered. Therefore, neither Precision Tank, Inc. nor its officers, directors, employee affiliates or subsidiaries shall be liable for the user of this information covered within. This information is adviser only and the use of the material and methods is solely at the risk of the user.